Question: What is the SI derived unit for the measured physical quantity of density?
Paraphrase: What is the SI inferred unit for the measured physical amount of density?
SPARQL (Wikidata):  select distinct ?sbj where { ?sbj wdt:P111 wd:Q29539 . ?sbj wdt:P31 wd:Q208469 } 
Answer: kilogram per cubic metre, gram per cubic centimetre